Claude Skills by OpenHands

Set up build environment and test fixtures for COBOL-to-Java migrations. Creates compilation infrastructure for both languages and generates golden test data.

End-to-end COBOL to Java migration workflow. Handles build setup, mainframe dependency removal, and code migration with test validation.

Apply mainframe dependency transformations to COBOL code using a pre-generated transformation guide. Converts CICS/VSAM constructs to standard COBOL.

Create a transformation guide for replacing mainframe-specific COBOL constructs with standard COBOL equivalents. Use when preparing COBOL code for local execution or migration.

Migrate COBOL code to idiomatic Java, preserving business logic while following Java best practices. Use for COBOL modernization projects.

A test skill that responds to the magic word "alakazam" with a specific phrase

Create a mapping from source language files to target language files for code migrations. Use when evaluating or documenting a migration project.

Generate a comprehensive migration report summarizing quality scores and providing recommendations. Use after scoring a migration project.

Evaluate code migration quality with coverage, correctness, and style scoring. Generates executive reports with actionable recommendations.

Score code migration quality based on coverage and correctness. Evaluates how well target code represents source functionality.

Score migrated code against style guidelines and best practices. Evaluates code quality independent of functional correctness.

Evaluate how well a codebase supports autonomous AI-assisted development. Analyzes repositories across five pillars (Agent Instructions, Feedback Loops, Workflows & Automation, Policy & Governance, Build & Dev Environment) covering 74 features. Use when users want to assess how agent-ready a repository is.

Use an agent readiness report to identify and implement improvements that make a repository more agent-friendly. Proposes repo-appropriate fixes for each pillar, then implements them on request. Use after running a readiness report or when a user wants to improve their repo's AI-readiness.

Generate a high-quality, repo-specific AGENTS.md file that tells AI agents how to work effectively in a repository. Reads the actual repo to extract commands, structure, conventions, and guardrails — never generates generic boilerplate. Use when a user wants to create or improve their AGENTS.md, or after a readiness report identifies a missing agent instruction file.

Set up a repository for effective use with OpenHands. Creates AGENTS.md, setup and pre-commit scripts, and a PR review workflow. Designed to run automatically with minimal user intervention. Use when a user wants to configure their repo for OpenHands.

Set up the OpenHands automated PR review workflow in a GitHub repository. Creates the workflow file and asks the user for configuration preferences. Use when a user wants AI code review on their pull requests.

Unified OpenHands plugin — bundles the OpenHands Cloud CLI, Cloud REST API (openhands-api), Automations (openhands-automation), and Software Agent SDK reference (openhands-sdk) into a single plugin. Use this when you need to interact with OpenHands Cloud or build agents with the SDK.

Generate consistent, well-structured release notes from git history. Triggered on release tags following semver patterns (v*.*.*) to produce categorized changelog with breaking changes, features, fixes, and contributor attribution.

Add comprehensive JavaDoc documentation to Java classes and methods. Use when documenting Java code, adding API documentation, or improving code documentation.

Add an external skill from a GitHub repository to the current workspace. Use when users want to import, install, or add a skill from a GitHub URL (e.g., `/add-skill https://github.com/OpenHands/extensions/tree/main/skills/codereview` or "add the codereview skill from https://github.com/OpenHands/extensions/"). Handles fetching the skill files and placing them in .agents/skills/.

Create file-based sub-agents as Markdown files following the OpenHands SDK format. Guides the user through a structured interview to collect requirements, then generates a ready-to-deploy agent file. Use this skill when the user wants to create, design, or build a new sub-agent, even if they don't use the /agent-creator command.

Guided workflow for building custom AI agents using the OpenHands Software Agent SDK. Use when you want to create a new agent through an interactive interview process that gathers requirements and generates implementation plans.

Interact with Azure DevOps repositories, pull requests, and APIs using the AZURE_DEVOPS_TOKEN environment variable. Use when working with code hosted on Azure DevOps or managing Azure DevOps resources.

Interact with Bitbucket repositories and pull requests using the BITBUCKET_TOKEN environment variable. Use when working with code hosted on Bitbucket or managing Bitbucket resources via API.

Rigorous code review focusing on data structures, simplicity, security, pragmatism, and risk/safety evaluation. Provides brutally honest, actionable feedback on pull requests or merge requests, including a risk assessment for every review. Use when reviewing code changes.

Simplifies and refines code for clarity, consistency, and maintainability while preserving all functionality. Analyzes recently modified code across three dimensions - code reuse, code quality, and efficiency - and provides actionable improvement suggestions. This skill should be used when the user asks to "simplify code", "refine code", "clean up code", "improve code quality", or requests a simplification review of recent changes.

Query and analyze Datadog logs, metrics, APM traces, and monitors using the Datadog API. Use when debugging production issues, monitoring application performance, or investigating alerts.

If the project uses deno, use this skill. Use this skill to initialize and work with Deno projects, add/remove dependencies (JSR and npm), run tasks and scripts with appropriate permissions, and use built-in tooling (fmt/lint/test).

Build and automate Discord integrations (bots, webhooks, slash commands, and REST API workflows). Use when the user mentions Discord, a Discord server/guild, channels, webhooks, bot tokens, slash commands/application commands, discord.js, or discord.py.

Run Docker commands within a container environment, including starting the Docker daemon and managing containers. Use when building, running, or managing Docker containers and images.

Back factual claims and field values with official, verifiable sources. Use when the user asks to fill fields, answer questions, or make claims that must be supported by an exact quote and an official link.

A test skill that responds to the magic word "flarglebargle" with a compliment. Use for testing skill activation and trigger functionality.

Create distinctive, production-grade frontend interfaces with high design quality. Use this skill when the user asks to build web components, pages, artifacts, posters, or applications (examples include websites, landing pages, dashboards, React components, HTML/CSS layouts, or when styling/beautifying any web UI). Generates creative, polished code and UI design that avoids generic AI aesthetics.

Post PR review comments using the GitHub API with inline comments, suggestions, and priority labels.

Create an automation that reviews GitHub pull requests when they are opened or updated. Inspects the diff, changed files, tests, and existing discussion via GitHub MCP, then posts a concise review highlighting risks, security issues, missing tests, and next steps.

This skill should be used when the user asks to "monitor a GitHub repository", "watch GitHub for issues or PRs", "respond to @OpenHands mentions on GitHub", "set up an OpenHands GitHub integration", "trigger OpenHands from a GitHub comment", or "poll a GitHub repo for a trigger phrase". Guides the user through creating a cron automation that polls a single repository and starts an OpenHands conversation whenever a configurable trigger phrase is detected in an issue or PR comment.

Interact with GitHub repositories, pull requests, issues, and workflows using the GITHUB_TOKEN environment variable and GitHub CLI. Use when working with code hosted on GitHub or managing GitHub resources.

Interact with GitLab repositories, merge requests, and APIs using the GITLAB_TOKEN environment variable. Use when working with code hosted on GitLab or managing GitLab resources.

Create an automation that drafts incident retrospectives. Gathers incident-channel messages from Slack, collects linked tickets and follow-ups from Linear, and publishes a retrospective draft to Notion with a timeline, impact summary, root-cause hypotheses, and action items.

Iterate on a GitHub pull request — drive it through CI, code review, and QA until it is merge-ready. Poll verification layers with `gh` CLI, diagnose and fix CI failures, address review feedback, retry flaky checks, push fixes, and repeat. The agent is the orchestration loop.

Read, modify, execute, and convert Jupyter notebooks programmatically. Use when working with .ipynb files for data science workflows, including editing cells, clearing outputs, or converting to other formats.

Set up and manage local Kubernetes clusters using KIND (Kubernetes IN Docker). Use when testing Kubernetes applications locally or developing cloud-native workloads.

Distill code review feedback from GitHub PRs into reusable skills and guidelines. This skill should be used when users ask to "learn from code reviews", "distill PR feedback", "improve coding standards", "extract learnings from reviews", or want to generate skills/guidelines from historical review comments.

Create an automation that triages new Linear issues. Inspects the issue title, description, team, customer, priority, and recent related issues via Linear MCP. Suggests labels, priority, likely owner, duplicates, and posts a clarifying comment.

Interact with Linear project management - query issues, update status, create tickets, and manage workflows using the Linear GraphQL API. Use when working with Linear tickets, sprints, or project tracking.

Create, search, and update Notion pages/databases using the Notion API. Use for documenting work, generating runbooks, and automating knowledge base updates.

Handle npm package installation in non-interactive environments by piping confirmations. Use when installing Node.js packages that require user confirmation prompts.

Reference skill for the OpenHands Cloud REST API (V1), including how to start additional cloud conversations for fresh-context or delegated work. Use when you need to automate common OpenHands Cloud actions; don't use for general sandbox/dev tasks unrelated to the OpenHands API.

This skill should be used when the user asks to "create an automation", "schedule a task", "set up a cron job", "webhook integration", "event-triggered automation", or mentions automations, scheduled tasks, cron scheduling, or webhook events in OpenHands Cloud.

Reference skill for the OpenHands Software Agent SDK - the Python framework for building AI agents that write software. Use when you need to build agents with the SDK, create custom tools, configure LLMs, manage conversations, delegate to sub-agents, or deploy agents locally or remotely.